The present study has also been motivated by few other considerations. First, it is known, that resummation of higher-order corrections enhanced by \(\ln M/q_T\)  in the formalisms of Soft-Collinear Effective Theory(SCET) [1]}, [2]}, [3]} and TMD-factorization [4]} are driven by rapidity divergences. On the other hand, the kernel of BFKL equation can be derived as a coefficient of rapidity-divergent part of four-Reggeon Green's function in Lipatov's gauge-invariant EFT for high-energy processes in QCD [5]}, see e.g. Ref. [6]}. The gluon Regge trajectory at one [7]} and two loops [8]}, [9]} can be computed as the coefficient of rapidity divergence of Reggeized gluon self-energy. These results suggest a close connection between rapidity divergences in SCET and BFKL physics, see e.g. Ref. [10]}, [11]} for an approach to incorporate BFKL physics into SCET language.
